@mixin transition($transition-time, $transition-property: all, $method: ease) {
    -webkit-transition: $transition-property $transition-time $method;
    -moz-transition:    $transition-property $transition-time $method;
    -ms-transition:     $transition-property $transition-time $method;
    -o-transition:      $transition-property $transition-time $method;
    transition:         $transition-property $transition-time $method;
}

@mixin box-shadow($set){
    -webkit-box-shadow: $set;
    -moz-box-shadow:    $set;
    box-shadow:         $set;
};

@mixin border-radius($val){
    -webkit-border-radius:  $val;
    -moz-border-radius:     $val;
    border-radius:          $val;
}

@mixin box-sizing($boxmodel) {
  -webkit-box-sizing: $boxmodel;
     -moz-box-sizing: $boxmodel;
          box-sizing: $boxmodel;
}